EWI Service duct within Insulation - Stepped face

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Detail summary

A detail for an insulated services run within an external wall insulation system, stepped in from the finished face of the wall. Used where service runs such as soil pipes or ventilation ducts are to be contained within the depth of the insulation, meaning an accessible service void should be created.

Prior to work carry out a visual inspection of the services to be enclosed within service void, to ensure in sound condition before constructing service void.

Notes

Care should be taken to ensure air-tightness. Seal all service penetrations. Lap and tape all membranes.

All insulation to be continuous to avoid thermal bridging.

Preparation of external wall: Remove any existing loose material and prepare in accordance with manufacturer's requirements.

Any alterations to drainage and other fixtures, or work to prepare the substrate, to be agreed with contract administrator prior to work being undertaken. Prior to start on site inspect: form and condition of the structural substrate; institute repairs and/ or additional works necessary to make the substrate suitable to receive EWI system.

Parts list

Woodfibre External Wall insulation system [EW01]

Composite woodfibre board for use on solid and hard to treat cavity walls.

Insulation back board: UdiTherm SK.

Insulation top board: Diffutherm NF (T&G, renderable).

Thermal conductivity: 0.045W/m2K. GWP 0.

Base Coat: levelling on substrate: 90% contact required around edge of boards between board and substrate to prevent thermal bypass. If substrate is very uneven, use base-coat material around edge of board to achieve contact.

Fixing: Fixed mechanically to substrate in accordance with manufacturers recommendations.

Discussion

For those who have seen the Earth from space, and for the hundreds and perhaps thousands more who will, the experience most certainly changes your perspective. The things that we share in our world are far more valuable than those which divide us.

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For those who have seen the Earth from space, and for the hundreds and perhaps thousands more who will, the experience most certainly changes your perspective. The things that we share in our world are far more valuable than those which divide us.

For those who have seen the Earth from space, and for the hundreds and perhaps thousands more who will, the experience most certainly changes your perspective. The things that we share in our world are far more valuable than those which divide us.

Ease of understanding detail: Easy

Ease of sourcing materials: Easy

Ease of sourcing skills: Easy

Ease of implementation: Easy

Overall cost: Low cost

User name

For those who have seen the Earth from space, and for the hundreds and perhaps thousands more who will, the experience most certainly changes your perspective. The things that we share in our world are far more valuable than those which divide us.

For those who have seen the Earth from space, and for the hundreds and perhaps thousands more who will, the experience most certainly changes your perspective. The things that we share in our world are far more valuable than those which divide us.

Ease of understanding detail: Easy

Ease of sourcing materials: Easy

Ease of sourcing skills: Easy

Ease of implementation: Easy

Overall cost: Low cost

User name

For those who have seen the Earth from space, and for the hundreds and perhaps thousands more who will, the experience most certainly changes your perspective. The things that we share in our world are far more valuable than those which divide us.

For those who have seen the Earth from space, and for the hundreds and perhaps thousands more who will, the experience most certainly changes your perspective. The things that we share in our world are far more valuable than those which divide us.